Bindi Irwin writes a heartfelt note to brother Robert as she lands home after winning DWTS US

BINDI Irwin has wished her little brother Robert a happy 12th birthday as she made it home just in time to celebrate his milestone following her successful stint on Dancing With The Stars US.

BINDI Irwin has wished her little brother Robert a happy 12th birthday as she made it home just in time to celebrate his milestone following her successful stint on Dancing With The Stars US.

The 17-year-old left a heartfelt message on her Instagram account this morning.

“Happy birthday to the greatest brother on earth,” she wrote online.

Bindi, Terri and Robert arrive home. Picture: MEDIA-MODE

“I can’t believe that it was an entire 12 years ago today when I met my little brother for the first time.

“Since that day he has grown up to be the smartest and most amazing boy on earth.

“Being a big sister is the greatest job of all.

“I love you so much, Robert. And I’ll be here for you forever.”

Bindi touched down in Australia yesterday after winning the reality dancing series with partner Derek Hough last week.

The Wildlife Warrior pocketed $230,000 (AU$322,000) in prizemoney.

Bindi arrives in Queensland. Picture: MEDIA-MODE

Bindi uploaded this picture of Robert this morning. Picture: Instagram

Bindi arrived in Queensland at Brisbane airport with her mother Terri and Robert.

She said she would donate all of her winnings to wildlife conservation.

“For us, we donate everything back to wildlife conservation,” she said.

Flashback... Bindi Irwin with mum,Terri dad, Steve and brother, Robert.

“So everything that I make goes straight back to wildlife conservation, which is really wonderful.

“But what’s interesting is after you pay tax to everything else, with Australia and all these other places, that actually it doesn’t add up to be that much.

“So it looks to be a good number, but it’s not actually that much.”

Bindi in Brisbane. Picture: MEDIA-MODE